Mat



FIG. 1 is a front/left/top perspective view of a mat;

FIG. 2 is a rear/right/bottom perspective view thereof;

FIG. 3 is a front elevational view thereof (the opposing rear view being a mirror image thereof);

FIG. 4 is a right side elevational view thereof (a left side elevational view would be a mirror image thereof);

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines representing the trademark and the array of small surface projections form no part of the claimed design. 

CLAIM I claim the ornamental design for a mat, as shown and described. 